N.J. Stat. Ann. § 2A:62-13

No judgment entered pursuant to the provisions of this article shall affect the right of any other person claiming to own the lands involved, or a part thereof, or interest therein, or holding a lien or encumbrance thereon, whose title, claim or encumbrance would be disclosed by a search of the title of such lands for a period of 60 years immediately prior to the commencement of the action, who is not made a party defendant.